How can i calculate theses

I have theses numbers and the result of them is number 8
what result i could have if the numbers are different ???????

Example

i have numbers what if i have numbers what is the result?
630 450
8 8
,039 ,062
8 8
8 8
8 8
1 1.3
0,9 1.7
0,136 -0,405
-1,021 -0,169
5 7
5162 3504

result 8 result??????

Please show me how i can calculate this

thanks
memas

More information is needed. What do those numbers represent? Where do they come from? How did you obtain the given result in the first place?